Resetting a textbox?

programming flash
1

I have a form, with a text box. the intitail text in the textbox says “type text here” . Is there how do I reset that text to nothign when the users clicks in that text field?

2 

textbox.onSetFocus = function(){
	if (this.text == "type text here") this.text = "";
}
3

hey thanks for the reply